Jump to content

LS refurb


Marvel

Recommended Posts

Finally going to get off my rear and get the LS cabs I bought about 4 years ago put together.

 

I will have some K400 horns on the way soon, which will complete all the components. I have a pair of K33 woofers, and some EV 1828R mid drivers. The tweeters will be the eminence mounted on the external baffle (shown on top of my old pair of LS). I kept those when I sold my other pair of LS. Using the DHA2 crossovers from the old pair as well.

 

I have opened up the doghouse in each to do the bass mod from DJK. I still have to enclose the back of the upper section and add ports, make the separate mounting plate for the woofers, but now I have real incentive to get them DONE!

 

Bruce

post-5045-0-63720000-1461976782_thumb.jp

post-5045-0-97520000-1461976795_thumb.jp

post-5045-0-33640000-1461976814_thumb.jp

post-5045-0-17680000-1461976826_thumb.jp

post-5045-0-74720000-1461976840_thumb.jp

post-5045-0-63600000-1461976890_thumb.jp

  • Like 8
Link to comment
Share on other sites

Bruce,

Best of luck with your build. I knew there was a reason behind putting my horns for sale. After seeing the pics above I realized you were the inspiration for the mods I did to my LSIs.

post-58691-0-16840000-1461980273_thumb.j

Moving the tweeters makes a huge difference.

Thanks,

Mark

Link to comment
Share on other sites

Moving the tweeters makes a huge difference. Thanks, Mark

 

Mustang Guy and I were discussing that today at his Speaker Ranch.

 

What is it you heard before, and what is it you hear after moving the tweets? 

Link to comment
Share on other sites

Moving the tweeters makes a huge difference. Thanks, Mark

Mustang Guy and I were discussing that today at his Speaker Ranch.

What is it you heard before, and what is it you hear after moving the tweets?

The sound stage is taller in the room and the slight smearing of sound where the mid and high driver overlap is gone. It's not just moving them up but moving them back to align with the mid driver.

Mark

Edited by cincymat
Link to comment
Share on other sites

That's it exactly! You are physically time aligning the mid and tweeter. It's not quite as noticeable on ths smearing between the woofer and mid, but that still remains. It's a huge improvement.

Bruce

Edited by Marvel
  • Like 1
Link to comment
Share on other sites

Good for you, Marvel.  Back in 2010, when I used to hang around here a bunch, you mentioned several times about doing just what you are doing at this moment.  I am very interested to see how you like the DJK mod.  From the information I have culled off this forum, and the net, it sounds like a slam dunk, never going back.  Waiting with baited breath.  :D

Link to comment
Share on other sites

Finally!   Keep the photos and reports coming. You won't be disappointed Bruce.

Other than, "press on," my only suggestions are to consider mounting the networks to the top inside of the top to clear the port tubes and to make the "sealed" backs easily removable.  Of course,  if you locate the ports slightly higher on the rear panel than I did, they would probably not interfere with the networks.  

post-6832-0-92720000-1462074481_thumb.jp

post-6832-0-03720000-1462074618_thumb.jp

Edited by DizRotus
Link to comment
Share on other sites

Mine aren't going to look like that... speaker envy! I will probably paint these. Would love to pretty tthem up with veneer, but at this point I am more interested in listening to LS again

Bruce

  • Like 4
Link to comment
Share on other sites

So, ....   moving the tweeters rearward, even though much higher, improves coherence, imaging, what?  The elevation doesn't just mess it up again? 

 

Bruce, I have some spare diaphragms and spare drivers, if you need something, including 2 or more K-55-Vs. 

  • Like 1
Link to comment
Share on other sites

John, the imaging is greatly improved. I thought I would have issues with reflections off the top of the cabinets, and tried placing different materials, but couldn't tell a difference. I am using the same tweeter that Bob Crites originally used, but it's on the Eminence horn. I lined it up with the mid, and moved it back and forth in small increments until, for want of a better word, everything came into focus.

The only other way to do this is using a digital crossover and multiple amps. Then you could leave the tweeter at the front and delay it's signal in the crossover. I'm not against going active, and see the merit, IF one is willing to use good components.

You still live the same place? I could bring the tweeters by some weekend and hook them up to see if you could hear the difference. I made no crossover changes.

  • Like 2
Link to comment
Share on other sites

Did anyone say La Scala Referb

 

Sano setup!  You've transformed those stock LS's into a pseudo tower speaker, very interesting. 

 

What is the story on the crossover?  Did you buy a kit or figure out the XO values for yourself?  I wouldn't even think of trying to design my own XO for a build that nice.

Link to comment
Share on other sites

Did anyone say La Scala Referb

Sano setup! You've transformed those stock LS's into a pseudo tower speaker, very interesting.

What is the story on the crossover? Did you buy a kit or figure out the XO values for yourself? I wouldn't even think of trying to design my own XO for a build that nice.

The cabinets are a full DIY build started by another member and tweaked by me - you will see the driver combo used in my signature

The Xovers are a highly modified ALK design

XOver build see here - https://community.klipsch.com/index.php?/topic/149952-a-crossover-design-on-single-exposed-board/

Edited by Full Range
  • Like 1
Link to comment
Share on other sites

Bruce, I am glad you finally are able to get this project up and running.  Things are looking good, keep the pics coming.

 

Bruce and John, since you have both posted here.  Maybe you can touch up on our DHA2 crossover design.  I remember reading a post about it a while back. However I do have a few questions that weren't quite answered in those post.  The most important one is.  How universal is this design?  I ask as I have some Belle bass bins I have built, and am using a few different horn and drivers for the mid/hf section.  Second, are the parts readily available here in the U.S.?  Last time I was going to take a wack at building a pair of Al's networks. The shipping alone was going to kill the deal.  If the parts can be had low cost, and they could be used some what universally.  I wouldn't mind giving them a try. 

  • Like 1
Link to comment
Share on other sites

The bass/mid crossover point is 400Hz, and would need to be changed for the Belle, unless that's what you want. I can't remember other details at the moment. Dean picked up the parts for me at PE, the aut[formers came from Bob anthe two Litz inductors came from Solen in Canada.

I didn't make them elegant, but they work great. If I were making a new set, I would see if Dean would sell me a pair of the n=w, larger autoformers he had made, and tidy up the build.

I also changed a tap setting to drop the mids down about 3db.

Bruce

  • Like 2
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...